Welcome from Michigan! 70 is not too old for much except playing leap frog perhaps. Over time, I have learned to use the computer and yes, indeed, I do order fabric from time to time online. The computer is a terrific tool and makes life easy. (It is also addictive.
) This is a grand place to learn in a gentle way. Consider quilting and computers to be brain exercise as you create a work of warmth and art.